Abstract: Conformationally restricted compounds are described which are therapeutically effective as angiotensin II antagonists for the treatment of circulatory disorders. Compounds of particular interest are of Formula I ##STR1## wherein W is N or CH.sub.2 ; wherein X is N or CR.sup.2 ; wherein Y is (CH.sub.2).sub.n and n is 1 to 3; wherein Z is C.dbd.R.sup.3 or CR.sup.4 R.sup.5, or wherein Y and Z together forms --CR.sup.6 .dbd.CR.sup.7 --, --CR.sup.6 .dbd.CR.sup.7 --CH.sub.2 or --CR.sup.6 .dbd.CR.sup.7 --CH.sub.2 --CH.sup.2 --; wherein the remainder of the variables are as defined in the specification; or a pharmaceutically suitable salt or tautomer thereof.